public class Homework01{
	public static void main(String[] args){
		//输出结果
		int n1;
		n1 = 13;
		int n2;
		n2 = 17;
		int n3;
		n3 = n1 + n2;
		System.out.println("n3 = " + n3);//n3 = 30
		int n4 = 38;
		int n5 = n4 - n3;
		System.out.println("n5 = " + n5);//n5 = 8
    	
    	}
}